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Finding the Fourth Proportional to 40,602.75, 60,904.49 and 15,978.75

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Solution

The fourth proportional to 40,602.75, 60,904.49 and 15,978.75 is: 23,968.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,602.75 : 60,904.49 = 15,978.75 : x
  2. Step 2: Convert to fraction form
    40,602.75/60,904.49 = 15,978.75/x
  3. Step 3: Cross multiply
    40,602.75x = 60,904.49 × 15,978.75
  4. Step 4: Simplify right side
    40,602.75x = 973,177,539.69
  5. Step 5: Solve for x
    x = 973,177,539.69/40,602.75
  6. Step 6: Final answer
    x = 23,968.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.